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<h1 id="sec_name">
<span data-if="hdevelop" style="display:inline;">info_framegrabber</span><span data-if="c" style="display:none;">T_info_framegrabber</span><span data-if="cpp" style="display:none;">InfoFramegrabber</span><span data-if="dotnet" style="display:none;">InfoFramegrabber</span><span data-if="python" style="display:none;">info_framegrabber</span> (算子名称)</h1>
<h2>名称</h2>
<p><code><span data-if="hdevelop" style="display:inline;">info_framegrabber</span><span data-if="c" style="display:none;">T_info_framegrabber</span><span data-if="cpp" style="display:none;">InfoFramegrabber</span><span data-if="dotnet" style="display:none;">InfoFramegrabber</span><span data-if="python" style="display:none;">info_framegrabber</span></code> — Query information about the specified image acquisition interface.</p>
<h2 id="sec_synopsis">参数签名</h2>
<div data-if="hdevelop" style="display:inline;">
<p>
<code><b>info_framegrabber</b>( :  : <a href="#Name"><i>Name</i></a>, <a href="#Query"><i>Query</i></a> : <a href="#Information"><i>Information</i></a>, <a href="#ValueList"><i>ValueList</i></a>)</code></p>
</div>
<div data-if="c" style="display:none;">
<p>
<code>Herror <b>T_info_framegrabber</b>(const Htuple <a href="#Name"><i>Name</i></a>, const Htuple <a href="#Query"><i>Query</i></a>, Htuple* <a href="#Information"><i>Information</i></a>, Htuple* <a href="#ValueList"><i>ValueList</i></a>)</code></p>
</div>
<div data-if="cpp" style="display:none;">
<p>
<code>void <b>InfoFramegrabber</b>(const HTuple&amp; <a href="#Name"><i>Name</i></a>, const HTuple&amp; <a href="#Query"><i>Query</i></a>, HTuple* <a href="#Information"><i>Information</i></a>, HTuple* <a href="#ValueList"><i>ValueList</i></a>)</code></p>
<p>
<code>static HString <a href="HInfo.html">HInfo</a>::<b>InfoFramegrabber</b>(const HString&amp; <a href="#Name"><i>Name</i></a>, const HString&amp; <a href="#Query"><i>Query</i></a>, HTuple* <a href="#ValueList"><i>ValueList</i></a>)</code></p>
<p>
<code>static HString <a href="HInfo.html">HInfo</a>::<b>InfoFramegrabber</b>(const char* <a href="#Name"><i>Name</i></a>, const char* <a href="#Query"><i>Query</i></a>, HTuple* <a href="#ValueList"><i>ValueList</i></a>)</code></p>
<p>
<code>static HString <a href="HInfo.html">HInfo</a>::<b>InfoFramegrabber</b>(const wchar_t* <a href="#Name"><i>Name</i></a>, const wchar_t* <a href="#Query"><i>Query</i></a>, HTuple* <a href="#ValueList"><i>ValueList</i></a>)  <span class="signnote">
            (
            Windows only)
          </span></code></p>
</div>
<div data-if="com" style="display:none;"></div>
<div data-if="dotnet" style="display:none;">
<p>
<code>static void <a href="HOperatorSet.html">HOperatorSet</a>.<b>InfoFramegrabber</b>(<a href="HTuple.html">HTuple</a> <a href="#Name"><i>name</i></a>, <a href="HTuple.html">HTuple</a> <a href="#Query"><i>query</i></a>, out <a href="HTuple.html">HTuple</a> <a href="#Information"><i>information</i></a>, out <a href="HTuple.html">HTuple</a> <a href="#ValueList"><i>valueList</i></a>)</code></p>
<p>
<code>static string <a href="HInfo.html">HInfo</a>.<b>InfoFramegrabber</b>(string <a href="#Name"><i>name</i></a>, string <a href="#Query"><i>query</i></a>, out <a href="HTuple.html">HTuple</a> <a href="#ValueList"><i>valueList</i></a>)</code></p>
</div>
<div data-if="python" style="display:none;">
<p>
<code>def <b>info_framegrabber</b>(<a href="#Name"><i>name</i></a>: str, <a href="#Query"><i>query</i></a>: str) -&gt; Tuple[str, Sequence[Union[str, int, float]]]</code></p>
</div>
<h2 id="sec_description">描述</h2>
<p>该算子 <code><span data-if="hdevelop" style="display:inline">info_framegrabber</span><span data-if="c" style="display:none">info_framegrabber</span><span data-if="cpp" style="display:none">InfoFramegrabber</span><span data-if="com" style="display:none">InfoFramegrabber</span><span data-if="dotnet" style="display:none">InfoFramegrabber</span><span data-if="python" style="display:none">info_framegrabber</span></code> returns information about the image
acquisition device <a href="#Name"><i><code><span data-if="hdevelop" style="display:inline">Name</span><span data-if="c" style="display:none">Name</span><span data-if="cpp" style="display:none">Name</span><span data-if="com" style="display:none">Name</span><span data-if="dotnet" style="display:none">name</span><span data-if="python" style="display:none">name</span></code></i></a>. The desired information is specified via
<a href="#Query"><i><code><span data-if="hdevelop" style="display:inline">Query</span><span data-if="c" style="display:none">Query</span><span data-if="cpp" style="display:none">Query</span><span data-if="com" style="display:none">Query</span><span data-if="dotnet" style="display:none">query</span><span data-if="python" style="display:none">query</span></code></i></a>. A textual description according to the selected
topic is returned in <a href="#Information"><i><code><span data-if="hdevelop" style="display:inline">Information</span><span data-if="c" style="display:none">Information</span><span data-if="cpp" style="display:none">Information</span><span data-if="com" style="display:none">Information</span><span data-if="dotnet" style="display:none">information</span><span data-if="python" style="display:none">information</span></code></i></a>.  If applicable,
<a href="#ValueList"><i><code><span data-if="hdevelop" style="display:inline">ValueList</span><span data-if="c" style="display:none">ValueList</span><span data-if="cpp" style="display:none">ValueList</span><span data-if="com" style="display:none">ValueList</span><span data-if="dotnet" style="display:none">valueList</span><span data-if="python" style="display:none">value_list</span></code></i></a> contains a list of supported values.  Up to now,
the following queries are possible:
</p>
<dl class="generic">

<dt><b>'bits_per_channel':</b></dt>
<dd><p>
 List of all supported values for the parameter
<code><span data-if="hdevelop" style="display:inline">BitsPerChannel</span><span data-if="c" style="display:none">BitsPerChannel</span><span data-if="cpp" style="display:none">BitsPerChannel</span><span data-if="com" style="display:none">BitsPerChannel</span><span data-if="dotnet" style="display:none">bitsPerChannel</span><span data-if="python" style="display:none">bits_per_channel</span></code>, see <a href="open_framegrabber.html"><code><span data-if="hdevelop" style="display:inline">open_framegrabber</span><span data-if="c" style="display:none">open_framegrabber</span><span data-if="cpp" style="display:none">OpenFramegrabber</span><span data-if="com" style="display:none">OpenFramegrabber</span><span data-if="dotnet" style="display:none">OpenFramegrabber</span><span data-if="python" style="display:none">open_framegrabber</span></code></a>.
</p></dd>

<dt><b>'camera_type':</b></dt>
<dd><p>
 Description and list of all supported values for the
parameter <code><span data-if="hdevelop" style="display:inline">CameraType</span><span data-if="c" style="display:none">CameraType</span><span data-if="cpp" style="display:none">CameraType</span><span data-if="com" style="display:none">CameraType</span><span data-if="dotnet" style="display:none">cameraType</span><span data-if="python" style="display:none">camera_type</span></code>,
see <a href="open_framegrabber.html"><code><span data-if="hdevelop" style="display:inline">open_framegrabber</span><span data-if="c" style="display:none">open_framegrabber</span><span data-if="cpp" style="display:none">OpenFramegrabber</span><span data-if="com" style="display:none">OpenFramegrabber</span><span data-if="dotnet" style="display:none">OpenFramegrabber</span><span data-if="python" style="display:none">open_framegrabber</span></code></a>.
</p></dd>

<dt><b>'color_space':</b></dt>
<dd><p>
 List of all supported values for the parameter
<code><span data-if="hdevelop" style="display:inline">ColorSpace</span><span data-if="c" style="display:none">ColorSpace</span><span data-if="cpp" style="display:none">ColorSpace</span><span data-if="com" style="display:none">ColorSpace</span><span data-if="dotnet" style="display:none">colorSpace</span><span data-if="python" style="display:none">color_space</span></code>,
see <a href="open_framegrabber.html"><code><span data-if="hdevelop" style="display:inline">open_framegrabber</span><span data-if="c" style="display:none">open_framegrabber</span><span data-if="cpp" style="display:none">OpenFramegrabber</span><span data-if="com" style="display:none">OpenFramegrabber</span><span data-if="dotnet" style="display:none">OpenFramegrabber</span><span data-if="python" style="display:none">open_framegrabber</span></code></a>.
</p></dd>

<dt><b>'defaults':</b></dt>
<dd><p>
   Interface-specific default values
in <a href="#ValueList"><i><code><span data-if="hdevelop" style="display:inline">ValueList</span><span data-if="c" style="display:none">ValueList</span><span data-if="cpp" style="display:none">ValueList</span><span data-if="com" style="display:none">ValueList</span><span data-if="dotnet" style="display:none">valueList</span><span data-if="python" style="display:none">value_list</span></code></i></a>, see <a href="open_framegrabber.html"><code><span data-if="hdevelop" style="display:inline">open_framegrabber</span><span data-if="c" style="display:none">open_framegrabber</span><span data-if="cpp" style="display:none">OpenFramegrabber</span><span data-if="com" style="display:none">OpenFramegrabber</span><span data-if="dotnet" style="display:none">OpenFramegrabber</span><span data-if="python" style="display:none">open_framegrabber</span></code></a>.
</p></dd>

<dt><b>'device':</b></dt>
<dd><p>
     List of all supported values for the parameter
<code><span data-if="hdevelop" style="display:inline">Device</span><span data-if="c" style="display:none">Device</span><span data-if="cpp" style="display:none">Device</span><span data-if="com" style="display:none">Device</span><span data-if="dotnet" style="display:none">device</span><span data-if="python" style="display:none">device</span></code>, see <a href="open_framegrabber.html"><code><span data-if="hdevelop" style="display:inline">open_framegrabber</span><span data-if="c" style="display:none">open_framegrabber</span><span data-if="cpp" style="display:none">OpenFramegrabber</span><span data-if="com" style="display:none">OpenFramegrabber</span><span data-if="dotnet" style="display:none">OpenFramegrabber</span><span data-if="python" style="display:none">open_framegrabber</span></code></a>.
</p></dd>

<dt><b>'external_trigger':</b></dt>
<dd><p>
 List of all supported values for the parameter
<code><span data-if="hdevelop" style="display:inline">ExternalTrigger</span><span data-if="c" style="display:none">ExternalTrigger</span><span data-if="cpp" style="display:none">ExternalTrigger</span><span data-if="com" style="display:none">ExternalTrigger</span><span data-if="dotnet" style="display:none">externalTrigger</span><span data-if="python" style="display:none">external_trigger</span></code>, see <a href="open_framegrabber.html"><code><span data-if="hdevelop" style="display:inline">open_framegrabber</span><span data-if="c" style="display:none">open_framegrabber</span><span data-if="cpp" style="display:none">OpenFramegrabber</span><span data-if="com" style="display:none">OpenFramegrabber</span><span data-if="dotnet" style="display:none">OpenFramegrabber</span><span data-if="python" style="display:none">open_framegrabber</span></code></a>.
</p></dd>

<dt><b>'field':</b></dt>
<dd><p>
      List of all supported values for the parameter
<code><span data-if="hdevelop" style="display:inline">Field</span><span data-if="c" style="display:none">Field</span><span data-if="cpp" style="display:none">Field</span><span data-if="com" style="display:none">Field</span><span data-if="dotnet" style="display:none">field</span><span data-if="python" style="display:none">field</span></code>, see <a href="open_framegrabber.html"><code><span data-if="hdevelop" style="display:inline">open_framegrabber</span><span data-if="c" style="display:none">open_framegrabber</span><span data-if="cpp" style="display:none">OpenFramegrabber</span><span data-if="com" style="display:none">OpenFramegrabber</span><span data-if="dotnet" style="display:none">OpenFramegrabber</span><span data-if="python" style="display:none">open_framegrabber</span></code></a>.
</p></dd>

<dt><b>'general':</b></dt>
<dd><p>
    General information (in <a href="#Information"><i><code><span data-if="hdevelop" style="display:inline">Information</span><span data-if="c" style="display:none">Information</span><span data-if="cpp" style="display:none">Information</span><span data-if="com" style="display:none">Information</span><span data-if="dotnet" style="display:none">information</span><span data-if="python" style="display:none">information</span></code></i></a>).
</p></dd>

<dt><b>'generic':</b></dt>
<dd><p>
    Generic value with device-specific meaning,
see <a href="open_framegrabber.html"><code><span data-if="hdevelop" style="display:inline">open_framegrabber</span><span data-if="c" style="display:none">open_framegrabber</span><span data-if="cpp" style="display:none">OpenFramegrabber</span><span data-if="com" style="display:none">OpenFramegrabber</span><span data-if="dotnet" style="display:none">OpenFramegrabber</span><span data-if="python" style="display:none">open_framegrabber</span></code></a>.
</p></dd>

<dt><b>'horizontal_resolution':</b></dt>
<dd><p>
 List of all supported values for the
parameter <code><span data-if="hdevelop" style="display:inline">HorizontalResolution</span><span data-if="c" style="display:none">HorizontalResolution</span><span data-if="cpp" style="display:none">HorizontalResolution</span><span data-if="com" style="display:none">HorizontalResolution</span><span data-if="dotnet" style="display:none">horizontalResolution</span><span data-if="python" style="display:none">horizontal_resolution</span></code>, see
<a href="open_framegrabber.html"><code><span data-if="hdevelop" style="display:inline">open_framegrabber</span><span data-if="c" style="display:none">open_framegrabber</span><span data-if="cpp" style="display:none">OpenFramegrabber</span><span data-if="com" style="display:none">OpenFramegrabber</span><span data-if="dotnet" style="display:none">OpenFramegrabber</span><span data-if="python" style="display:none">open_framegrabber</span></code></a>.
</p></dd>

<dt><b>'image_height':</b></dt>
<dd><p>
 List of all supported values for the parameter
<code><span data-if="hdevelop" style="display:inline">ImageHeight</span><span data-if="c" style="display:none">ImageHeight</span><span data-if="cpp" style="display:none">ImageHeight</span><span data-if="com" style="display:none">ImageHeight</span><span data-if="dotnet" style="display:none">imageHeight</span><span data-if="python" style="display:none">image_height</span></code>, see <a href="open_framegrabber.html"><code><span data-if="hdevelop" style="display:inline">open_framegrabber</span><span data-if="c" style="display:none">open_framegrabber</span><span data-if="cpp" style="display:none">OpenFramegrabber</span><span data-if="com" style="display:none">OpenFramegrabber</span><span data-if="dotnet" style="display:none">OpenFramegrabber</span><span data-if="python" style="display:none">open_framegrabber</span></code></a>.
</p></dd>

<dt><b>'image_width':</b></dt>
<dd><p>
 List of all supported values for the parameter
<code><span data-if="hdevelop" style="display:inline">ImageWidth</span><span data-if="c" style="display:none">ImageWidth</span><span data-if="cpp" style="display:none">ImageWidth</span><span data-if="com" style="display:none">ImageWidth</span><span data-if="dotnet" style="display:none">imageWidth</span><span data-if="python" style="display:none">image_width</span></code>, see <a href="open_framegrabber.html"><code><span data-if="hdevelop" style="display:inline">open_framegrabber</span><span data-if="c" style="display:none">open_framegrabber</span><span data-if="cpp" style="display:none">OpenFramegrabber</span><span data-if="com" style="display:none">OpenFramegrabber</span><span data-if="dotnet" style="display:none">OpenFramegrabber</span><span data-if="python" style="display:none">open_framegrabber</span></code></a>.
</p></dd>

<dt><b>'info_boards':</b></dt>
<dd><p>
 Information about actually installed boards
or cameras. This data is especially useful for
the auto-detect mechanism of the Image
Acquisition Assistant in HDevelop.
</p></dd>

<dt><b>'line_in':</b></dt>
<dd><p>
    List of all supported values for the parameter
<code><span data-if="hdevelop" style="display:inline">LineIn</span><span data-if="c" style="display:none">LineIn</span><span data-if="cpp" style="display:none">LineIn</span><span data-if="com" style="display:none">LineIn</span><span data-if="dotnet" style="display:none">lineIn</span><span data-if="python" style="display:none">line_in</span></code>, see <a href="open_framegrabber.html"><code><span data-if="hdevelop" style="display:inline">open_framegrabber</span><span data-if="c" style="display:none">open_framegrabber</span><span data-if="cpp" style="display:none">OpenFramegrabber</span><span data-if="com" style="display:none">OpenFramegrabber</span><span data-if="dotnet" style="display:none">OpenFramegrabber</span><span data-if="python" style="display:none">open_framegrabber</span></code></a>.
</p></dd>

<dt><b>'parameters':</b></dt>
<dd><p>
 List of all interface-specific parameters which
are accessible via <a href="set_framegrabber_param.html"><code><span data-if="hdevelop" style="display:inline">set_framegrabber_param</span><span data-if="c" style="display:none">set_framegrabber_param</span><span data-if="cpp" style="display:none">SetFramegrabberParam</span><span data-if="com" style="display:none">SetFramegrabberParam</span><span data-if="dotnet" style="display:none">SetFramegrabberParam</span><span data-if="python" style="display:none">set_framegrabber_param</span></code></a>
or <a href="get_framegrabber_param.html"><code><span data-if="hdevelop" style="display:inline">get_framegrabber_param</span><span data-if="c" style="display:none">get_framegrabber_param</span><span data-if="cpp" style="display:none">GetFramegrabberParam</span><span data-if="com" style="display:none">GetFramegrabberParam</span><span data-if="dotnet" style="display:none">GetFramegrabberParam</span><span data-if="python" style="display:none">get_framegrabber_param</span></code></a>.
</p></dd>

<dt><b>'parameters_readonly':</b></dt>
<dd><p>
 List of all interface-specific parameters
which are only accessible via
<a href="get_framegrabber_param.html"><code><span data-if="hdevelop" style="display:inline">get_framegrabber_param</span><span data-if="c" style="display:none">get_framegrabber_param</span><span data-if="cpp" style="display:none">GetFramegrabberParam</span><span data-if="com" style="display:none">GetFramegrabberParam</span><span data-if="dotnet" style="display:none">GetFramegrabberParam</span><span data-if="python" style="display:none">get_framegrabber_param</span></code></a>.
</p></dd>

<dt><b>'parameters_writeonly':</b></dt>
<dd><p>
 List of all interface-specific parameters
which are only accessible via
<a href="set_framegrabber_param.html"><code><span data-if="hdevelop" style="display:inline">set_framegrabber_param</span><span data-if="c" style="display:none">set_framegrabber_param</span><span data-if="cpp" style="display:none">SetFramegrabberParam</span><span data-if="com" style="display:none">SetFramegrabberParam</span><span data-if="dotnet" style="display:none">SetFramegrabberParam</span><span data-if="python" style="display:none">set_framegrabber_param</span></code></a>.
</p></dd>

<dt><b>'port':</b></dt>
<dd><p>
       List of all supported values for the parameter
<code><span data-if="hdevelop" style="display:inline">Port</span><span data-if="c" style="display:none">Port</span><span data-if="cpp" style="display:none">Port</span><span data-if="com" style="display:none">Port</span><span data-if="dotnet" style="display:none">port</span><span data-if="python" style="display:none">port</span></code>, see <a href="open_framegrabber.html"><code><span data-if="hdevelop" style="display:inline">open_framegrabber</span><span data-if="c" style="display:none">open_framegrabber</span><span data-if="cpp" style="display:none">OpenFramegrabber</span><span data-if="com" style="display:none">OpenFramegrabber</span><span data-if="dotnet" style="display:none">OpenFramegrabber</span><span data-if="python" style="display:none">open_framegrabber</span></code></a>.
</p></dd>

<dt><b>'revision':</b></dt>
<dd><p>
   Version number of the image acquisition interface.
</p></dd>

<dt><b>'start_column':</b></dt>
<dd><p>
 List of all supported values for the parameter
<code><span data-if="hdevelop" style="display:inline">StartColumn</span><span data-if="c" style="display:none">StartColumn</span><span data-if="cpp" style="display:none">StartColumn</span><span data-if="com" style="display:none">StartColumn</span><span data-if="dotnet" style="display:none">startColumn</span><span data-if="python" style="display:none">start_column</span></code>, see <a href="open_framegrabber.html"><code><span data-if="hdevelop" style="display:inline">open_framegrabber</span><span data-if="c" style="display:none">open_framegrabber</span><span data-if="cpp" style="display:none">OpenFramegrabber</span><span data-if="com" style="display:none">OpenFramegrabber</span><span data-if="dotnet" style="display:none">OpenFramegrabber</span><span data-if="python" style="display:none">open_framegrabber</span></code></a>.
</p></dd>

<dt><b>'start_row':</b></dt>
<dd><p>
  List of all supported values for the parameter
<code><span data-if="hdevelop" style="display:inline">StartRow</span><span data-if="c" style="display:none">StartRow</span><span data-if="cpp" style="display:none">StartRow</span><span data-if="com" style="display:none">StartRow</span><span data-if="dotnet" style="display:none">startRow</span><span data-if="python" style="display:none">start_row</span></code>, see <a href="open_framegrabber.html"><code><span data-if="hdevelop" style="display:inline">open_framegrabber</span><span data-if="c" style="display:none">open_framegrabber</span><span data-if="cpp" style="display:none">OpenFramegrabber</span><span data-if="com" style="display:none">OpenFramegrabber</span><span data-if="dotnet" style="display:none">OpenFramegrabber</span><span data-if="python" style="display:none">open_framegrabber</span></code></a>.
</p></dd>

<dt><b>'vertical_resolution':</b></dt>
<dd><p>
 List of all supported values for the
parameter <code><span data-if="hdevelop" style="display:inline">VerticalResolution</span><span data-if="c" style="display:none">VerticalResolution</span><span data-if="cpp" style="display:none">VerticalResolution</span><span data-if="com" style="display:none">VerticalResolution</span><span data-if="dotnet" style="display:none">verticalResolution</span><span data-if="python" style="display:none">vertical_resolution</span></code>, see
<a href="open_framegrabber.html"><code><span data-if="hdevelop" style="display:inline">open_framegrabber</span><span data-if="c" style="display:none">open_framegrabber</span><span data-if="cpp" style="display:none">OpenFramegrabber</span><span data-if="com" style="display:none">OpenFramegrabber</span><span data-if="dotnet" style="display:none">OpenFramegrabber</span><span data-if="python" style="display:none">open_framegrabber</span></code></a>.
</p></dd>
</dl>
<p>Please check also the directory <code>doc/html/reference/acquisition</code>
for documentation about specific image grabber interfaces.
</p>
<h2 id="sec_attention">注意</h2>
<p>For a multithreaded application,
<code><span data-if="hdevelop" style="display:inline">info_framegrabber</span><span data-if="c" style="display:none">info_framegrabber</span><span data-if="cpp" style="display:none">InfoFramegrabber</span><span data-if="com" style="display:none">InfoFramegrabber</span><span data-if="dotnet" style="display:none">InfoFramegrabber</span><span data-if="python" style="display:none">info_framegrabber</span></code>, <a href="open_framegrabber.html"><code><span data-if="hdevelop" style="display:inline">open_framegrabber</span><span data-if="c" style="display:none">open_framegrabber</span><span data-if="cpp" style="display:none">OpenFramegrabber</span><span data-if="com" style="display:none">OpenFramegrabber</span><span data-if="dotnet" style="display:none">OpenFramegrabber</span><span data-if="python" style="display:none">open_framegrabber</span></code></a>, and
<a href="close_framegrabber.html"><code><span data-if="hdevelop" style="display:inline">close_framegrabber</span><span data-if="c" style="display:none">close_framegrabber</span><span data-if="cpp" style="display:none">CloseFramegrabber</span><span data-if="com" style="display:none">CloseFramegrabber</span><span data-if="dotnet" style="display:none">CloseFramegrabber</span><span data-if="python" style="display:none">close_framegrabber</span></code></a> are executed exclusively. Thus,
they block the concurrent execution of each other, but run in
parallel with all non-exclusive operators outside of this group.
</p>
<p>On Windows Systems, error dialog boxes from the operating system can occur
when dependency modules of the interface are not found, e.g., the according
SDK was not installed. The occurrence of the error boxes can be controlled
by setting Windows' Error Mode. Please refer to the description of
SetErrorMode within the Windows MSDN documentation.
</p>
<h2 id="sec_execution">运行信息</h2>
<ul>
  <li>多线程类型:可重入(与非独占操作符并行运行)。</li>
<li>多线程作用域:全局(可以从任何线程调用)。</li>
  <li>未经并行化处理。</li>
</ul>
<h2 id="sec_parameters">参数表</h2>
  <div class="par">
<div class="parhead">
<span id="Name" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Name</span><span data-if="c" style="display:none">Name</span><span data-if="cpp" style="display:none">Name</span><span data-if="com" style="display:none">Name</span><span data-if="dotnet" style="display:none">name</span><span data-if="python" style="display:none">name</span></code></b> (input_control)  </span><span>string <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">str</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (string)</span><span data-if="dotnet" style="display:none"> (<i>string</i>)</span><span data-if="cpp" style="display:none"> (<i>HString</i>)</span><span data-if="c" style="display:none"> (<i>char*</i>)</span></span>
</div>
<p class="pardesc">HALCON image acquisition interface name, i.e.,
name of the corresponding DLL (Windows) or
shared library (Linux).</p>
<p class="pardesc"><span class="parcat">Default:
      </span>
    <span data-if="hdevelop" style="display:inline">'File'</span>
    <span data-if="c" style="display:none">"File"</span>
    <span data-if="cpp" style="display:none">"File"</span>
    <span data-if="com" style="display:none">"File"</span>
    <span data-if="dotnet" style="display:none">"File"</span>
    <span data-if="python" style="display:none">"File"</span>
</p>
<p class="pardesc"><span class="parcat">Suggested values:
      </span><span data-if="hdevelop" style="display:inline">'ABS'</span><span data-if="c" style="display:none">"ABS"</span><span data-if="cpp" style="display:none">"ABS"</span><span data-if="com" style="display:none">"ABS"</span><span data-if="dotnet" style="display:none">"ABS"</span><span data-if="python" style="display:none">"ABS"</span>, <span data-if="hdevelop" style="display:inline">'ADLINK'</span><span data-if="c" style="display:none">"ADLINK"</span><span data-if="cpp" style="display:none">"ADLINK"</span><span data-if="com" style="display:none">"ADLINK"</span><span data-if="dotnet" style="display:none">"ADLINK"</span><span data-if="python" style="display:none">"ADLINK"</span>, <span data-if="hdevelop" style="display:inline">'AlkUSB3'</span><span data-if="c" style="display:none">"AlkUSB3"</span><span data-if="cpp" style="display:none">"AlkUSB3"</span><span data-if="com" style="display:none">"AlkUSB3"</span><span data-if="dotnet" style="display:none">"AlkUSB3"</span><span data-if="python" style="display:none">"AlkUSB3"</span>, <span data-if="hdevelop" style="display:inline">'Andor'</span><span data-if="c" style="display:none">"Andor"</span><span data-if="cpp" style="display:none">"Andor"</span><span data-if="com" style="display:none">"Andor"</span><span data-if="dotnet" style="display:none">"Andor"</span><span data-if="python" style="display:none">"Andor"</span>, <span data-if="hdevelop" style="display:inline">'BitFlow'</span><span data-if="c" style="display:none">"BitFlow"</span><span data-if="cpp" style="display:none">"BitFlow"</span><span data-if="com" style="display:none">"BitFlow"</span><span data-if="dotnet" style="display:none">"BitFlow"</span><span data-if="python" style="display:none">"BitFlow"</span>, <span data-if="hdevelop" style="display:inline">'Crevis'</span><span data-if="c" style="display:none">"Crevis"</span><span data-if="cpp" style="display:none">"Crevis"</span><span data-if="com" style="display:none">"Crevis"</span><span data-if="dotnet" style="display:none">"Crevis"</span><span data-if="python" style="display:none">"Crevis"</span>, <span data-if="hdevelop" style="display:inline">'DahengCAM'</span><span data-if="c" style="display:none">"DahengCAM"</span><span data-if="cpp" style="display:none">"DahengCAM"</span><span data-if="com" style="display:none">"DahengCAM"</span><span data-if="dotnet" style="display:none">"DahengCAM"</span><span data-if="python" style="display:none">"DahengCAM"</span>, <span data-if="hdevelop" style="display:inline">'DirectFile'</span><span data-if="c" style="display:none">"DirectFile"</span><span data-if="cpp" style="display:none">"DirectFile"</span><span data-if="com" style="display:none">"DirectFile"</span><span data-if="dotnet" style="display:none">"DirectFile"</span><span data-if="python" style="display:none">"DirectFile"</span>, <span data-if="hdevelop" style="display:inline">'DirectShow'</span><span data-if="c" style="display:none">"DirectShow"</span><span data-if="cpp" style="display:none">"DirectShow"</span><span data-if="com" style="display:none">"DirectShow"</span><span data-if="dotnet" style="display:none">"DirectShow"</span><span data-if="python" style="display:none">"DirectShow"</span>, <span data-if="hdevelop" style="display:inline">'Ensenso-NxLib'</span><span data-if="c" style="display:none">"Ensenso-NxLib"</span><span data-if="cpp" style="display:none">"Ensenso-NxLib"</span><span data-if="com" style="display:none">"Ensenso-NxLib"</span><span data-if="dotnet" style="display:none">"Ensenso-NxLib"</span><span data-if="python" style="display:none">"Ensenso-NxLib"</span>, <span data-if="hdevelop" style="display:inline">'File'</span><span data-if="c" style="display:none">"File"</span><span data-if="cpp" style="display:none">"File"</span><span data-if="com" style="display:none">"File"</span><span data-if="dotnet" style="display:none">"File"</span><span data-if="python" style="display:none">"File"</span>, <span data-if="hdevelop" style="display:inline">'FocalSpecLCI'</span><span data-if="c" style="display:none">"FocalSpecLCI"</span><span data-if="cpp" style="display:none">"FocalSpecLCI"</span><span data-if="com" style="display:none">"FocalSpecLCI"</span><span data-if="dotnet" style="display:none">"FocalSpecLCI"</span><span data-if="python" style="display:none">"FocalSpecLCI"</span>, <span data-if="hdevelop" style="display:inline">'GenICamTL'</span><span data-if="c" style="display:none">"GenICamTL"</span><span data-if="cpp" style="display:none">"GenICamTL"</span><span data-if="com" style="display:none">"GenICamTL"</span><span data-if="dotnet" style="display:none">"GenICamTL"</span><span data-if="python" style="display:none">"GenICamTL"</span>, <span data-if="hdevelop" style="display:inline">'GigEVision2'</span><span data-if="c" style="display:none">"GigEVision2"</span><span data-if="cpp" style="display:none">"GigEVision2"</span><span data-if="com" style="display:none">"GigEVision2"</span><span data-if="dotnet" style="display:none">"GigEVision2"</span><span data-if="python" style="display:none">"GigEVision2"</span>, <span data-if="hdevelop" style="display:inline">'GingaDG'</span><span data-if="c" style="display:none">"GingaDG"</span><span data-if="cpp" style="display:none">"GingaDG"</span><span data-if="com" style="display:none">"GingaDG"</span><span data-if="dotnet" style="display:none">"GingaDG"</span><span data-if="python" style="display:none">"GingaDG"</span>, <span data-if="hdevelop" style="display:inline">'Ginga++'</span><span data-if="c" style="display:none">"Ginga++"</span><span data-if="cpp" style="display:none">"Ginga++"</span><span data-if="com" style="display:none">"Ginga++"</span><span data-if="dotnet" style="display:none">"Ginga++"</span><span data-if="python" style="display:none">"Ginga++"</span>, <span data-if="hdevelop" style="display:inline">'GStreamer'</span><span data-if="c" style="display:none">"GStreamer"</span><span data-if="cpp" style="display:none">"GStreamer"</span><span data-if="com" style="display:none">"GStreamer"</span><span data-if="dotnet" style="display:none">"GStreamer"</span><span data-if="python" style="display:none">"GStreamer"</span>, <span data-if="hdevelop" style="display:inline">'heliCamC3'</span><span data-if="c" style="display:none">"heliCamC3"</span><span data-if="cpp" style="display:none">"heliCamC3"</span><span data-if="com" style="display:none">"heliCamC3"</span><span data-if="dotnet" style="display:none">"heliCamC3"</span><span data-if="python" style="display:none">"heliCamC3"</span>, <span data-if="hdevelop" style="display:inline">'KeyenceVJ'</span><span data-if="c" style="display:none">"KeyenceVJ"</span><span data-if="cpp" style="display:none">"KeyenceVJ"</span><span data-if="com" style="display:none">"KeyenceVJ"</span><span data-if="dotnet" style="display:none">"KeyenceVJ"</span><span data-if="python" style="display:none">"KeyenceVJ"</span>, <span data-if="hdevelop" style="display:inline">'LinX'</span><span data-if="c" style="display:none">"LinX"</span><span data-if="cpp" style="display:none">"LinX"</span><span data-if="com" style="display:none">"LinX"</span><span data-if="dotnet" style="display:none">"LinX"</span><span data-if="python" style="display:none">"LinX"</span>, <span data-if="hdevelop" style="display:inline">'LPS36'</span><span data-if="c" style="display:none">"LPS36"</span><span data-if="cpp" style="display:none">"LPS36"</span><span data-if="com" style="display:none">"LPS36"</span><span data-if="dotnet" style="display:none">"LPS36"</span><span data-if="python" style="display:none">"LPS36"</span>, <span data-if="hdevelop" style="display:inline">'LuCam'</span><span data-if="c" style="display:none">"LuCam"</span><span data-if="cpp" style="display:none">"LuCam"</span><span data-if="com" style="display:none">"LuCam"</span><span data-if="dotnet" style="display:none">"LuCam"</span><span data-if="python" style="display:none">"LuCam"</span>, <span data-if="hdevelop" style="display:inline">'MatrixVisionAcquire'</span><span data-if="c" style="display:none">"MatrixVisionAcquire"</span><span data-if="cpp" style="display:none">"MatrixVisionAcquire"</span><span data-if="com" style="display:none">"MatrixVisionAcquire"</span><span data-if="dotnet" style="display:none">"MatrixVisionAcquire"</span><span data-if="python" style="display:none">"MatrixVisionAcquire"</span>, <span data-if="hdevelop" style="display:inline">'MediaFoundation'</span><span data-if="c" style="display:none">"MediaFoundation"</span><span data-if="cpp" style="display:none">"MediaFoundation"</span><span data-if="com" style="display:none">"MediaFoundation"</span><span data-if="dotnet" style="display:none">"MediaFoundation"</span><span data-if="python" style="display:none">"MediaFoundation"</span>, <span data-if="hdevelop" style="display:inline">'MILLite'</span><span data-if="c" style="display:none">"MILLite"</span><span data-if="cpp" style="display:none">"MILLite"</span><span data-if="com" style="display:none">"MILLite"</span><span data-if="dotnet" style="display:none">"MILLite"</span><span data-if="python" style="display:none">"MILLite"</span>, <span data-if="hdevelop" style="display:inline">'MultiCam'</span><span data-if="c" style="display:none">"MultiCam"</span><span data-if="cpp" style="display:none">"MultiCam"</span><span data-if="com" style="display:none">"MultiCam"</span><span data-if="dotnet" style="display:none">"MultiCam"</span><span data-if="python" style="display:none">"MultiCam"</span>, <span data-if="hdevelop" style="display:inline">'O3D3xx'</span><span data-if="c" style="display:none">"O3D3xx"</span><span data-if="cpp" style="display:none">"O3D3xx"</span><span data-if="com" style="display:none">"O3D3xx"</span><span data-if="dotnet" style="display:none">"O3D3xx"</span><span data-if="python" style="display:none">"O3D3xx"</span>, <span data-if="hdevelop" style="display:inline">'Opteon'</span><span data-if="c" style="display:none">"Opteon"</span><span data-if="cpp" style="display:none">"Opteon"</span><span data-if="com" style="display:none">"Opteon"</span><span data-if="dotnet" style="display:none">"Opteon"</span><span data-if="python" style="display:none">"Opteon"</span>, <span data-if="hdevelop" style="display:inline">'PhoXi'</span><span data-if="c" style="display:none">"PhoXi"</span><span data-if="cpp" style="display:none">"PhoXi"</span><span data-if="com" style="display:none">"PhoXi"</span><span data-if="dotnet" style="display:none">"PhoXi"</span><span data-if="python" style="display:none">"PhoXi"</span>, <span data-if="hdevelop" style="display:inline">'PixeLINK'</span><span data-if="c" style="display:none">"PixeLINK"</span><span data-if="cpp" style="display:none">"PixeLINK"</span><span data-if="com" style="display:none">"PixeLINK"</span><span data-if="dotnet" style="display:none">"PixeLINK"</span><span data-if="python" style="display:none">"PixeLINK"</span>, <span data-if="hdevelop" style="display:inline">'pylon'</span><span data-if="c" style="display:none">"pylon"</span><span data-if="cpp" style="display:none">"pylon"</span><span data-if="com" style="display:none">"pylon"</span><span data-if="dotnet" style="display:none">"pylon"</span><span data-if="python" style="display:none">"pylon"</span>, <span data-if="hdevelop" style="display:inline">'RealSense'</span><span data-if="c" style="display:none">"RealSense"</span><span data-if="cpp" style="display:none">"RealSense"</span><span data-if="com" style="display:none">"RealSense"</span><span data-if="dotnet" style="display:none">"RealSense"</span><span data-if="python" style="display:none">"RealSense"</span>, <span data-if="hdevelop" style="display:inline">'SaperaLT'</span><span data-if="c" style="display:none">"SaperaLT"</span><span data-if="cpp" style="display:none">"SaperaLT"</span><span data-if="com" style="display:none">"SaperaLT"</span><span data-if="dotnet" style="display:none">"SaperaLT"</span><span data-if="python" style="display:none">"SaperaLT"</span>, <span data-if="hdevelop" style="display:inline">'Sentech'</span><span data-if="c" style="display:none">"Sentech"</span><span data-if="cpp" style="display:none">"Sentech"</span><span data-if="com" style="display:none">"Sentech"</span><span data-if="dotnet" style="display:none">"Sentech"</span><span data-if="python" style="display:none">"Sentech"</span>, <span data-if="hdevelop" style="display:inline">'SICK-3DCamera'</span><span data-if="c" style="display:none">"SICK-3DCamera"</span><span data-if="cpp" style="display:none">"SICK-3DCamera"</span><span data-if="com" style="display:none">"SICK-3DCamera"</span><span data-if="dotnet" style="display:none">"SICK-3DCamera"</span><span data-if="python" style="display:none">"SICK-3DCamera"</span>, <span data-if="hdevelop" style="display:inline">'SICK-ScanningRuler'</span><span data-if="c" style="display:none">"SICK-ScanningRuler"</span><span data-if="cpp" style="display:none">"SICK-ScanningRuler"</span><span data-if="com" style="display:none">"SICK-ScanningRuler"</span><span data-if="dotnet" style="display:none">"SICK-ScanningRuler"</span><span data-if="python" style="display:none">"SICK-ScanningRuler"</span>, <span data-if="hdevelop" style="display:inline">'SiliconSoftware'</span><span data-if="c" style="display:none">"SiliconSoftware"</span><span data-if="cpp" style="display:none">"SiliconSoftware"</span><span data-if="com" style="display:none">"SiliconSoftware"</span><span data-if="dotnet" style="display:none">"SiliconSoftware"</span><span data-if="python" style="display:none">"SiliconSoftware"</span>, <span data-if="hdevelop" style="display:inline">'Slink'</span><span data-if="c" style="display:none">"Slink"</span><span data-if="cpp" style="display:none">"Slink"</span><span data-if="com" style="display:none">"Slink"</span><span data-if="dotnet" style="display:none">"Slink"</span><span data-if="python" style="display:none">"Slink"</span>, <span data-if="hdevelop" style="display:inline">'TWAIN'</span><span data-if="c" style="display:none">"TWAIN"</span><span data-if="cpp" style="display:none">"TWAIN"</span><span data-if="com" style="display:none">"TWAIN"</span><span data-if="dotnet" style="display:none">"TWAIN"</span><span data-if="python" style="display:none">"TWAIN"</span>, <span data-if="hdevelop" style="display:inline">'uEye'</span><span data-if="c" style="display:none">"uEye"</span><span data-if="cpp" style="display:none">"uEye"</span><span data-if="com" style="display:none">"uEye"</span><span data-if="dotnet" style="display:none">"uEye"</span><span data-if="python" style="display:none">"uEye"</span>, <span data-if="hdevelop" style="display:inline">'USB3Vision'</span><span data-if="c" style="display:none">"USB3Vision"</span><span data-if="cpp" style="display:none">"USB3Vision"</span><span data-if="com" style="display:none">"USB3Vision"</span><span data-if="dotnet" style="display:none">"USB3Vision"</span><span data-if="python" style="display:none">"USB3Vision"</span>, <span data-if="hdevelop" style="display:inline">'Video4Linux2'</span><span data-if="c" style="display:none">"Video4Linux2"</span><span data-if="cpp" style="display:none">"Video4Linux2"</span><span data-if="com" style="display:none">"Video4Linux2"</span><span data-if="dotnet" style="display:none">"Video4Linux2"</span><span data-if="python" style="display:none">"Video4Linux2"</span>, <span data-if="hdevelop" style="display:inline">'VRmUsbCam'</span><span data-if="c" style="display:none">"VRmUsbCam"</span><span data-if="cpp" style="display:none">"VRmUsbCam"</span><span data-if="com" style="display:none">"VRmUsbCam"</span><span data-if="dotnet" style="display:none">"VRmUsbCam"</span><span data-if="python" style="display:none">"VRmUsbCam"</span></p>
</div>
  <div class="par">
<div class="parhead">
<span id="Query" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Query</span><span data-if="c" style="display:none">Query</span><span data-if="cpp" style="display:none">Query</span><span data-if="com" style="display:none">Query</span><span data-if="dotnet" style="display:none">query</span><span data-if="python" style="display:none">query</span></code></b> (input_control)  </span><span>string <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">str</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (string)</span><span data-if="dotnet" style="display:none"> (<i>string</i>)</span><span data-if="cpp" style="display:none"> (<i>HString</i>)</span><span data-if="c" style="display:none"> (<i>char*</i>)</span></span>
</div>
<p class="pardesc">Name of the chosen query.</p>
<p class="pardesc"><span class="parcat">Default:
      </span>
    <span data-if="hdevelop" style="display:inline">'info_boards'</span>
    <span data-if="c" style="display:none">"info_boards"</span>
    <span data-if="cpp" style="display:none">"info_boards"</span>
    <span data-if="com" style="display:none">"info_boards"</span>
    <span data-if="dotnet" style="display:none">"info_boards"</span>
    <span data-if="python" style="display:none">"info_boards"</span>
</p>
<p class="pardesc"><span class="parcat">List of values:
      </span><span data-if="hdevelop" style="display:inline">'bits_per_channel'</span><span data-if="c" style="display:none">"bits_per_channel"</span><span data-if="cpp" style="display:none">"bits_per_channel"</span><span data-if="com" style="display:none">"bits_per_channel"</span><span data-if="dotnet" style="display:none">"bits_per_channel"</span><span data-if="python" style="display:none">"bits_per_channel"</span>, <span data-if="hdevelop" style="display:inline">'camera_type'</span><span data-if="c" style="display:none">"camera_type"</span><span data-if="cpp" style="display:none">"camera_type"</span><span data-if="com" style="display:none">"camera_type"</span><span data-if="dotnet" style="display:none">"camera_type"</span><span data-if="python" style="display:none">"camera_type"</span>, <span data-if="hdevelop" style="display:inline">'color_space'</span><span data-if="c" style="display:none">"color_space"</span><span data-if="cpp" style="display:none">"color_space"</span><span data-if="com" style="display:none">"color_space"</span><span data-if="dotnet" style="display:none">"color_space"</span><span data-if="python" style="display:none">"color_space"</span>, <span data-if="hdevelop" style="display:inline">'defaults'</span><span data-if="c" style="display:none">"defaults"</span><span data-if="cpp" style="display:none">"defaults"</span><span data-if="com" style="display:none">"defaults"</span><span data-if="dotnet" style="display:none">"defaults"</span><span data-if="python" style="display:none">"defaults"</span>, <span data-if="hdevelop" style="display:inline">'device'</span><span data-if="c" style="display:none">"device"</span><span data-if="cpp" style="display:none">"device"</span><span data-if="com" style="display:none">"device"</span><span data-if="dotnet" style="display:none">"device"</span><span data-if="python" style="display:none">"device"</span>, <span data-if="hdevelop" style="display:inline">'external_trigger'</span><span data-if="c" style="display:none">"external_trigger"</span><span data-if="cpp" style="display:none">"external_trigger"</span><span data-if="com" style="display:none">"external_trigger"</span><span data-if="dotnet" style="display:none">"external_trigger"</span><span data-if="python" style="display:none">"external_trigger"</span>, <span data-if="hdevelop" style="display:inline">'field'</span><span data-if="c" style="display:none">"field"</span><span data-if="cpp" style="display:none">"field"</span><span data-if="com" style="display:none">"field"</span><span data-if="dotnet" style="display:none">"field"</span><span data-if="python" style="display:none">"field"</span>, <span data-if="hdevelop" style="display:inline">'general'</span><span data-if="c" style="display:none">"general"</span><span data-if="cpp" style="display:none">"general"</span><span data-if="com" style="display:none">"general"</span><span data-if="dotnet" style="display:none">"general"</span><span data-if="python" style="display:none">"general"</span>, <span data-if="hdevelop" style="display:inline">'generic'</span><span data-if="c" style="display:none">"generic"</span><span data-if="cpp" style="display:none">"generic"</span><span data-if="com" style="display:none">"generic"</span><span data-if="dotnet" style="display:none">"generic"</span><span data-if="python" style="display:none">"generic"</span>, <span data-if="hdevelop" style="display:inline">'horizontal_resolution'</span><span data-if="c" style="display:none">"horizontal_resolution"</span><span data-if="cpp" style="display:none">"horizontal_resolution"</span><span data-if="com" style="display:none">"horizontal_resolution"</span><span data-if="dotnet" style="display:none">"horizontal_resolution"</span><span data-if="python" style="display:none">"horizontal_resolution"</span>, <span data-if="hdevelop" style="display:inline">'image_height'</span><span data-if="c" style="display:none">"image_height"</span><span data-if="cpp" style="display:none">"image_height"</span><span data-if="com" style="display:none">"image_height"</span><span data-if="dotnet" style="display:none">"image_height"</span><span data-if="python" style="display:none">"image_height"</span>, <span data-if="hdevelop" style="display:inline">'image_width'</span><span data-if="c" style="display:none">"image_width"</span><span data-if="cpp" style="display:none">"image_width"</span><span data-if="com" style="display:none">"image_width"</span><span data-if="dotnet" style="display:none">"image_width"</span><span data-if="python" style="display:none">"image_width"</span>, <span data-if="hdevelop" style="display:inline">'info_boards'</span><span data-if="c" style="display:none">"info_boards"</span><span data-if="cpp" style="display:none">"info_boards"</span><span data-if="com" style="display:none">"info_boards"</span><span data-if="dotnet" style="display:none">"info_boards"</span><span data-if="python" style="display:none">"info_boards"</span>, <span data-if="hdevelop" style="display:inline">'parameters'</span><span data-if="c" style="display:none">"parameters"</span><span data-if="cpp" style="display:none">"parameters"</span><span data-if="com" style="display:none">"parameters"</span><span data-if="dotnet" style="display:none">"parameters"</span><span data-if="python" style="display:none">"parameters"</span>, <span data-if="hdevelop" style="display:inline">'parameters_readonly'</span><span data-if="c" style="display:none">"parameters_readonly"</span><span data-if="cpp" style="display:none">"parameters_readonly"</span><span data-if="com" style="display:none">"parameters_readonly"</span><span data-if="dotnet" style="display:none">"parameters_readonly"</span><span data-if="python" style="display:none">"parameters_readonly"</span>, <span data-if="hdevelop" style="display:inline">'parameters_writeonly'</span><span data-if="c" style="display:none">"parameters_writeonly"</span><span data-if="cpp" style="display:none">"parameters_writeonly"</span><span data-if="com" style="display:none">"parameters_writeonly"</span><span data-if="dotnet" style="display:none">"parameters_writeonly"</span><span data-if="python" style="display:none">"parameters_writeonly"</span>, <span data-if="hdevelop" style="display:inline">'port'</span><span data-if="c" style="display:none">"port"</span><span data-if="cpp" style="display:none">"port"</span><span data-if="com" style="display:none">"port"</span><span data-if="dotnet" style="display:none">"port"</span><span data-if="python" style="display:none">"port"</span>, <span data-if="hdevelop" style="display:inline">'revision'</span><span data-if="c" style="display:none">"revision"</span><span data-if="cpp" style="display:none">"revision"</span><span data-if="com" style="display:none">"revision"</span><span data-if="dotnet" style="display:none">"revision"</span><span data-if="python" style="display:none">"revision"</span>, <span data-if="hdevelop" style="display:inline">'start_column'</span><span data-if="c" style="display:none">"start_column"</span><span data-if="cpp" style="display:none">"start_column"</span><span data-if="com" style="display:none">"start_column"</span><span data-if="dotnet" style="display:none">"start_column"</span><span data-if="python" style="display:none">"start_column"</span>, <span data-if="hdevelop" style="display:inline">'start_row'</span><span data-if="c" style="display:none">"start_row"</span><span data-if="cpp" style="display:none">"start_row"</span><span data-if="com" style="display:none">"start_row"</span><span data-if="dotnet" style="display:none">"start_row"</span><span data-if="python" style="display:none">"start_row"</span>, <span data-if="hdevelop" style="display:inline">'vertical_resolution'</span><span data-if="c" style="display:none">"vertical_resolution"</span><span data-if="cpp" style="display:none">"vertical_resolution"</span><span data-if="com" style="display:none">"vertical_resolution"</span><span data-if="dotnet" style="display:none">"vertical_resolution"</span><span data-if="python" style="display:none">"vertical_resolution"</span></p>
</div>
  <div class="par">
<div class="parhead">
<span id="Information" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Information</span><span data-if="c" style="display:none">Information</span><span data-if="cpp" style="display:none">Information</span><span data-if="com" style="display:none">Information</span><span data-if="dotnet" style="display:none">information</span><span data-if="python" style="display:none">information</span></code></b> (output_control)  </span><span>string <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">str</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (string)</span><span data-if="dotnet" style="display:none"> (<i>string</i>)</span><span data-if="cpp" style="display:none"> (<i>HString</i>)</span><span data-if="c" style="display:none"> (<i>char*</i>)</span></span>
</div>
<p class="pardesc">Textual information (according to <a href="#Query"><i><code><span data-if="hdevelop" style="display:inline">Query</span><span data-if="c" style="display:none">Query</span><span data-if="cpp" style="display:none">Query</span><span data-if="com" style="display:none">Query</span><span data-if="dotnet" style="display:none">query</span><span data-if="python" style="display:none">query</span></code></i></a>).</p>
</div>
  <div class="par">
<div class="parhead">
<span id="ValueList" class="parname"><b><code><span data-if="hdevelop" style="display:inline">ValueList</span><span data-if="c" style="display:none">ValueList</span><span data-if="cpp" style="display:none">ValueList</span><span data-if="com" style="display:none">ValueList</span><span data-if="dotnet" style="display:none">valueList</span><span data-if="python" style="display:none">value_list</span></code></b> (output_control)  </span><span>string-array <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">Sequence[Union[str, int, float]]</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (string / </span><span data-if="hdevelop" style="display:inline">integer / </span><span data-if="hdevelop" style="display:inline">real)</span><span data-if="dotnet" style="display:none"> (<i>string</i> / </span><span data-if="dotnet" style="display:none">int / </span><span data-if="dotnet" style="display:none">long / </span><span data-if="dotnet" style="display:none">double)</span><span data-if="cpp" style="display:none"> (<i>HString</i> / </span><span data-if="cpp" style="display:none">Hlong / </span><span data-if="cpp" style="display:none">double)</span><span data-if="c" style="display:none"> (<i>char*</i> / </span><span data-if="c" style="display:none">Hlong / </span><span data-if="c" style="display:none">double)</span></span>
</div>
<p class="pardesc">List of values (according to <a href="#Query"><i><code><span data-if="hdevelop" style="display:inline">Query</span><span data-if="c" style="display:none">Query</span><span data-if="cpp" style="display:none">Query</span><span data-if="com" style="display:none">Query</span><span data-if="dotnet" style="display:none">query</span><span data-if="python" style="display:none">query</span></code></i></a>).</p>
</div>
<h2 id="sec_example_all">例程 (HDevelop)</h2>
<pre class="example">
* Select a suitable image acquisition interface name AcqName
info_framegrabber(AcqName,'port',Information,Values)
* Open image acquisition device using the default settings, see
* documentation of the actually used interface for more details
open_framegrabber(AcqName,1,1,0,0,0,0,'default',-1,'default',-1.0, \
                  'default','default','default',-1,-1,AcqHandle)
grab_image(Image,AcqHandle)
close_framegrabber(AcqHandle)
</pre>
<h2 id="sec_result">结果</h2>
<p>If the parameter values are correct and the specified image acquisition
interface is available, <code><span data-if="hdevelop" style="display:inline">info_framegrabber</span><span data-if="c" style="display:none">info_framegrabber</span><span data-if="cpp" style="display:none">InfoFramegrabber</span><span data-if="com" style="display:none">InfoFramegrabber</span><span data-if="dotnet" style="display:none">InfoFramegrabber</span><span data-if="python" style="display:none">info_framegrabber</span></code> 返回值
<TT>2</TT> (
      <TT>H_MSG_TRUE</TT>)
    .  Otherwise an exception is raised.</p>
<h2 id="sec_predecessors">可能的前置算子</h2>
<p>
<code><a href="open_framegrabber.html"><span data-if="hdevelop" style="display:inline">open_framegrabber</span><span data-if="c" style="display:none">open_framegrabber</span><span data-if="cpp" style="display:none">OpenFramegrabber</span><span data-if="com" style="display:none">OpenFramegrabber</span><span data-if="dotnet" style="display:none">OpenFramegrabber</span><span data-if="python" style="display:none">open_framegrabber</span></a></code>
</p>
<h2 id="sec_successors">可能的后置算子</h2>
<p>
<code><a href="open_framegrabber.html"><span data-if="hdevelop" style="display:inline">open_framegrabber</span><span data-if="c" style="display:none">open_framegrabber</span><span data-if="cpp" style="display:none">OpenFramegrabber</span><span data-if="com" style="display:none">OpenFramegrabber</span><span data-if="dotnet" style="display:none">OpenFramegrabber</span><span data-if="python" style="display:none">open_framegrabber</span></a></code>
</p>
<h2 id="sec_see">参考其它</h2>
<p>
<code><a href="open_framegrabber.html"><span data-if="hdevelop" style="display:inline">open_framegrabber</span><span data-if="c" style="display:none">open_framegrabber</span><span data-if="cpp" style="display:none">OpenFramegrabber</span><span data-if="com" style="display:none">OpenFramegrabber</span><span data-if="dotnet" style="display:none">OpenFramegrabber</span><span data-if="python" style="display:none">open_framegrabber</span></a></code>
</p>
<h2 id="sec_module">模块</h2>
<p>
Foundation</p>
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